JP4542851B2 - Clay mill - Google Patents

Description

  The present invention relates to a clay kneader for kneading clay as a material for ceramic products.

  Conventionally, it has a kneading chamber for kneading clay, a casing provided with an inlet for charging clay toward the kneading chamber and a discharge port for discharging the kneaded clay, and a self-centered axis disposed in the kneading chamber A kneading shaft that rotates around and pushes toward the discharge port while kneading the clay with a spiral projection formed on the peripheral surface, and crushes and kneads the clay that has been thrown into the kneading chamber from the charging port A clay kneader is known that uniformly disperses the water inside and degass the air present in the clay to make the clay suitable for pottery. In addition, in order to throw clay into the kneading chamber, there is an opening hole provided in the upper wall of the casing, and a hopper for throwing clay upward is connected to the opening hole (for example, patent) Reference 1).

Further, in the kneader configured as described above, when the kneading operation is interrupted in a state where the clay remains in the kneading chamber and the hopper, the clay remaining in the kneading chamber and the hopper is dried and mixed again. There is a possibility that the kneading operation becomes difficult when starting the operation, or the cleaning operation becomes difficult when cleaning the kneading chamber and the hopper. Therefore, in general, when the kneading operation is interrupted, a method has been used in which an operator inserts a wet cloth material into the hopper as necessary to suppress drying in the kneading chamber and the hopper.
Japanese Patent Laid-Open No. 9-277244

  However, according to the method of inserting the wet cloth material into the hopper as described above, the effect of suppressing the clay in the kneading chamber varies depending on the material of the cloth material, the wet condition, etc., and the uniform suppression effect is obtained. It was difficult to obtain, and it was troublesome to prepare and wet a predetermined cloth material every time the kneading operation was interrupted.

  Therefore, an object of the present invention is to provide a clay kneader that can easily suppress drying of clay remaining in the kneading chamber and the hopper when the kneading operation is interrupted.

  The invention according to claim 1, which has been made to achieve the above object, has a kneading chamber for kneading clay therein, and an opening hole through which clay is poured toward the kneading chamber. And a casing having a discharge port for discharging clay from the kneading chamber, a hopper provided in connection with the opening hole and having an opening into which the clay is charged, and being put into and out of the hopper, A pressing plate that press-fits the clay into the kneading chamber, a connecting rod that supports the pressing plate, is connected to the pressing plate and extends to the opposite side of the opening hole through the pressing plate, and an opening of the hopper A hopper lid that is detachably configured with respect to the hopper and seals the opening. The hopper lid includes a recess that fits with a peripheral wall of the hopper opening. In addition, the connecting rod is inserted and elastically contacted An insertion hole, and a notch extending from the insertion hole to one end of the hopper lid portion, and when being attached to and detached from the hopper, the notch is widened, and the connecting rod slides along the notch and the insertion hole It is formed by an elastic body that is inserted into or detached from the insertion hole and the cut-out bar returns to the original closed state by its own elasticity after the connecting rod comes out of the cut-in part.

  According to the kneading machine of claim 1, the hopper lid is configured to be detachable with respect to the opening portion of the hopper, and includes a hopper lid that is attached to the opening portion of the hopper and seals the opening portion. When the hopper lid is attached to and detached from the hopper, it has a recess that fits into the peripheral wall of the opening, an insertion hole through which the connecting rod is inserted and elastically contacted, and a cut from the insertion hole to one end of the hopper lid portion. After the notch is widened, the connecting rod slides along the notch and is inserted into or removed from the insertion hole, and after the connecting rod comes out of the notch, the notch returns to its original closed state by its own elasticity. Therefore, when the kneading operation is interrupted, the opening of the hopper is sealed with a hopper lid, and drying of the clay remaining in the kneading chamber and the hopper can be easily suppressed. Further, in the present invention, when the drying of the clay remaining in the hopper and the kneading chamber is suppressed, the hopper lid may be attached to the hopper instead of the cloth material of the conventional example. Becomes easy.

Next, the invention according to claim 2 is the kneader according to claim 1, wherein the hopper lid is
Along the peripheral edge of the through-hole and both edges of the notch, there is provided a strip-like thick portion having a large thickness in the axial direction of the insertion hole.

  According to the kneader according to claim 2, the hopper lid includes a strip-shaped thick portion in which the axial thickness of the insertion hole is increased along the peripheral edge of the insertion hole and both edges of the cut. Therefore, it is possible to satisfactorily maintain the adhesion between the connecting rod and the insertion hole when the connecting rod is inserted into the insertion hole, the adhesion of the cut portion when the cut is closed, and the like.

  Next, according to a third aspect of the present invention, in the kneader according to the first or second aspect, the hopper has a first annular protrusion that protrudes outward along the outer peripheral edge on the opening side. The hopper lid includes a second annular protrusion that protrudes inward along an inner peripheral edge on the opening side of the concave portion, and the first annular shape when the hopper lid is attached to the hopper. A protrusion is configured to be inserted into the hopper lid portion and engage with the second annular protrusion.

  According to the kneader according to claim 3, the hopper includes the first annular protrusion that protrudes outward along the outer peripheral edge on the opening side, and the hopper lid is provided on the inner peripheral edge on the opening side of the concave part. A second annular projection that protrudes inward along the hopper so that when the hopper lid is mounted on the hopper, the first annular projection is inserted into the hopper lid and engages with the second annular projection. When the hopper lid is fitted to the hopper, the first annular protrusion and the second annular protrusion are engaged with each other to seal the hopper opening and remain in the kneading chamber and the hopper. Clay drying can be reliably suppressed.

  Next, according to a fourth aspect of the present invention, there is provided the kneader according to any one of the first to third aspects, wherein the presser plate has an outer shape formed along an inner shape of the hopper. The opening hole of the casing is shielded when inserted into the casing.

  According to the kneading machine according to claim 4, the outer shape of the presser plate is formed along the inner shape of the hopper, and when the presser plate is inserted into the hopper, the opening hole of the casing is shielded. When the operation is interrupted, the presser plate is inserted into the hopper to shield the opening hole in the casing, and the hopper opening is sealed with a hopper lid to ensure that the clay remaining in the kneading chamber is prevented from drying. it can.

  According to the kneader of the present invention, when the kneading operation is interrupted, the presser plate is inserted into the hopper to shield the opening hole of the casing and the hopper lid is attached to the hopper to seal the hopper opening. Further, drying of clay remaining in the kneading chamber and the hopper can be easily suppressed.

  Next, an embodiment of the kneading machine of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view from the front side of a kneading machine according to an embodiment of the present invention, FIG. 2 is a view showing an appearance and a partial cross section in the direction A in FIG. 1, and FIG. FIG. 4 is a detailed diagram showing the fitting between the hopper and the hopper lid in FIG. 1, and FIG. 5 is a diagram showing the configuration of the hopper lid in the same embodiment.

  As shown in FIG. 1, the clay kneader 1 of the present embodiment has a kneading chamber 4 fixed on a base 3 and kneading clay inside, and the clay is directed toward the kneading chamber 4 on the upper wall. A casing 8 having a nozzle 7 for discharging clay pressed from the kneading chamber 4, and attached below the nozzle 7, and receives the clay discharged from the discharge port 7 a of the nozzle 7. A kneading shaft 11a that is disposed in the cradle 30 and the kneading chamber 4, rotates around its own axis, and presses toward the discharge port 7a while kneading the clay with a spiral projection 9 protruding from the peripheral surface. 11b, a drive motor 12 for rotationally driving the kneading shafts 11a, 11b (so-called drive source of the present invention), a drive control device 2 for controlling the drive of the drive motor 12, a power switch 16, and an opening 6 Connected to and extended vertically, clay is thrown in That the hopper 13, the press-fitting mechanism 15 for press-fitting the inserted clay hopper 13 into the mixing chamber 4, and a like.

  A nozzle 7 is disposed coaxially with and connected to one end of the casing 8. On the other hand, on the other end of the casing 8, a holder 38 that rotatably supports the base end portions of the kneading shafts 11a and 11b is connected to the casing 3 coaxially and fixed to the base 3. 3, a support plate 39 that rotatably supports the base end sides of the kneading shafts 11 a and 11 b and supports a rotation shaft 29 a of a connecting gear 29 described later is attached to the holder 38. It has been.

  On the base 3, a casing 8 and a holder 38 are placed above, and both ends are bent downward, and leg portions 3a and 3b installed on the floor surface are formed. Below the base 3, a drive motor 12, a drive control device 2 for controlling the drive of the drive motor 12, a power switch 16 for switching the start and stop of the drive control device 2, and the like are attached.

  Next, a motor gear 26 is fixed to the rotating shaft 12 a of the drive motor 12, and the motor gear 26 is engaged with the relay gear 29. The relay gear 29 is rotatably supported by a rotating shaft 29a fixed to the support plate 39 via a ball bearing.

  As shown in FIG. 2, the kneading shaft 11a is connected to the kneading shaft gear 27 and the kneading shaft 11b is connected to the kneading shaft gear 28 so that they can be rotated. The kneading shaft 11a and the kneading shaft 11b are parallel to each other. It is arranged. The kneading shafts 11a and 11b are configured to receive the rotational driving force of the drive motor 12 via the motor gear 26, the relay gear 29, and the kneading shaft gears 27 and 28 and rotate in opposite directions. .

  Next, as shown in FIG. 1, the press-fitting mechanism 15 is disposed above the casing 8 at a position horizontally facing the hopper 13, and is connected to the outer wall of the hopper 13 via the connecting member 14. A shaft (reference numeral 17 in FIG. 2) and one end 18a are rotatably engaged with the support shaft 17, and the shaft is substantially upright with the support shaft 17 as a fulcrum (P1 in FIG. 1). Position) to a substantially horizontal position (position P2 in FIG. 1). The operation lever 18 is connected to the operation lever 18 through the connecting rod 21 so as to be swingable. 13 includes a pressing plate 20 that presses the clay in the hopper 13 into the kneading chamber 4, a connecting rod 21 that connects the pressing plate 20 and the operation lever 18, and the like. The inner shape of the hopper 13 and the outer shape of the presser plate 20 are both formed in a square shape, and the outer shape of the presser plate 20 is smaller than the inner shape of the hopper 13 so that the presser plate 20 can be inserted into the hopper 13. ing.

  The connecting rod 21 is rotatably supported by the operation lever 18 via the shaft 21a, and supports the presser plate 20. At this time, the connecting rod 21 and the operating lever 18 slide while the presser plate 20 is inserted into and removed from the hopper 13 such that one side of the outer periphery of the presser plate 20 comes into contact with the inner surface on one side of the inner periphery of the hopper 13. As described above, an attachment angle α between the connecting rod 21 and the operation lever is set, and a stopper (not shown) is provided in the rotation direction R. Further, the connecting rod 21 is engaged with the operation lever 18 in the direction opposite to the rotation direction R so as to freely rotate about the shaft 21a.

  In addition, the hopper 13 is tapered so that the upper opening end spreads outward.

  When the operator rotates the operation lever 18 in the R direction, the press-fitting mechanism 15 having the above-described configuration is guided into the hopper 13 with the outer peripheral portion on one side of the pressing plate 20 coming into contact with the taper of the hopper 13. The clay that is in contact with the inner surface on one side of the inner circumference of the hopper 13 and slides and the clay previously put in the hopper 13 is pressed into the kneading chamber 4 through the opening hole 6 is configured. Has been.

  Next, as shown in FIG. 2, the clay kneader 1 includes a cam 22 that engages with one end 18 a of the operation lever 18 and rotates together with the operation lever 18, and an axial direction is disposed vertically, and the upper end is a cam. And a connecting shaft guide member having an insertion hole 24a that is fixed to the upper surface of a holder (reference numeral 38 in FIG. 1) and through which the cam connecting shaft 23 is slidably inserted. 24.

  Further, as shown in FIG. 3, a limit switch 25 for switching the stop and release of the drive motor 12 through the movement of the cam connecting shaft 23 in the vertical direction is transmitted to the holder 38 via the fixture 25c. Installed. The limit switch 25 is configured so that the presser plate 20 moves above the hopper 13 as the operation lever 18 swings from the upright position (position P1 in FIG. 1) to the horizontal position (position P2 in FIG. 1). The drive motor 12 starts to be driven at the shielding position where the opening is shielded, and the drive motor 12 stops within the range where the operation lever 18 reaches the shielding position from the upright position (however, the shielding position is not included). , Connected to the drive control device 2.

  A stopper 34 that supports the lower end of the compression coil spring 33 is fixed to the lower end portion of the insertion hole 24 a, and the cam coupling shaft 23 is biased upward by the compression coil spring 33, and the upper end thereof is the outer periphery of the cam 22. It is in contact with the surface.

  Further, the limit switch 25 is provided with a slide shaft 25a that is urged so as to protrude outward by a spring member provided in the limit switch 25 and slides in the horizontal direction. A cam shaft is provided at the tip of the slide shaft 25a. A rotating body 25b that rotates when the connecting shaft 23 abuts and slides up and down is rotatably engaged.

  As shown in FIG. 1, the cam 22 has a shape in which a portion of the circumference is cut straight, and the cam connecting shaft 23 is located at the circumferential portion of the cam 22 when the operation lever 18 is substantially upright. The lower outer peripheral portion of the cam connecting shaft 23 contacts the rotating body (reference numeral 25b in FIG. 3) and pushes down the slide shaft (reference numeral 25a in FIG. 3) in the horizontal direction, and the limit switch 25 is driven by the drive motor. 12 is operated to stop driving. When the operation lever 18 is rotated in the R direction, the cam connecting shaft 23 comes into contact with the straight portion of the cam 22 when the presser plate 20 reaches a position where the opening of the hopper 13 is blocked. The outer periphery of the lower part of the rotating body (reference numeral 25b in FIG. 3) is moved up and down and returned so that the slide shaft (reference numeral 25a in FIG. 3) protrudes from the limit switch (reference numeral 25 in FIG. 3). The limit switch 25 operates to drive the drive motor 12.

  Further, when the operation lever 18 is rotated upward from the shielding position, the cam connecting shaft 23 comes into contact with the circumferential portion of the cam 22 again, and the lower outer peripheral portion of the cam connecting shaft 23 is the limit switch 25. The slide shaft 25a is pushed down horizontally in contact with the rotating body 25b, and the limit switch 25 operates so as to stop driving of the drive motor 12.

  Further, the clay kneader 1 of the present embodiment is fixed by, for example, bolts so that the base 3 and the casing 8, the casing 8 and the nozzle 7, the nozzle 7 and the cradle 30, and the casing 8 and the hopper 13 can be attached and detached. ing. As a result, the kneader 1 can separate the casing 8, the nozzle 7, the cradle 30, the hopper 13, and the like from the base 3 after kneading the clay, and washing them and washing the kneading shafts 11a and 11b. Can be easily performed. Further, since the limit switch 25 is fixed to the holder 38 separately from the casing 8, the nozzle 7, the cradle 30, the hopper 13, and the like, cleaning liquid, clay, and the like do not adhere during the cleaning.

  Next, the clay kneader 1 of the present embodiment is configured as follows so that the clay remaining in the kneading chamber 2 and the hopper 13 is not dried when the kneading operation is interrupted.

  First, as shown in FIG. 4, the kneader 1 has the outer shape of the presser plate 20 formed along the inner shape of the hopper 13, and when the kneading operation is interrupted, the presser plate 20 is placed in the hopper 13. The opening 8 of the casing 8 can be inserted and shielded.

  The kneader 1 also includes a hopper lid 5 that is attached to the opening of the hopper 13 and seals the opening so as to be detachable from the opening of the hopper 13.

  The hopper lid 5 is formed in the shape shown in FIG. 5 (a) is a top view, FIG. 5 (b) is an arrow A view in FIG. 5 (a), and FIG. 5 (c) is a sectional XX view in FIG. 5 (a).

  The hopper lid 5 is formed of an elastic rubber material (for example, synthetic rubber such as polychloroprene), and includes a recess 5f that fits with the peripheral wall of the opening of the hopper 13, and the connecting rod 21 is inserted and elastically contacted. An insertion hole 5a and a notch 5b extending from the insertion hole 5a to one end of the hopper lid 5 are provided. Further, the hopper lid 5 is provided with a strip-shaped thick portion 5d having a large thickness in the axial direction of the insertion hole 5a along the peripheral edge of the insertion hole 5a and both edges of the notch 5b. When the hopper lid 5 is mounted on the hopper 13, the notch 5b is widened, the connecting rod 21 is slid along the notch 5b and inserted into the insertion hole 5a, and the connecting rod 21 is inserted into the insertion hole 5a. After that, the incision 5b is formed of the rubber material having the above-described elasticity (so-called elastic body of the present invention) so that it returns to its original closed state by its own elasticity.

  As shown in FIG. 4, the hopper 13 is provided with a first annular protrusion 13a that protrudes outward along the outer peripheral edge on the opening side, and the hopper lid 5 has an opening side of the recess 5f. A second annular projection 5c that protrudes inward along the inner peripheral edge of the hopper 13 is provided. When the hopper lid 5 is mounted on the hopper 13, the first annular projection 13a is inserted into the hopper lid 5 to It is comprised so that it may engage with the 2 cyclic | annular protrusion 5c.

  When the kneading operation is interrupted, the presser plate 20 is inserted into the hopper 13 to shield the opening hole 6 of the casing 8, and the cut 5b is widened, and the connecting rod 21 is slid along the cut 5b. Then, the hopper lid 5 may be attached to the hopper 13 so that the first annular protrusion 13a of the hopper 13 and the second annular protrusion 5c of the hopper lid 5 are engaged with each other.

  When the hopper lid 5 attached to the hopper 13 is removed from the hopper 13, the hopper lid 5 is pushed up to engage the first annular protrusion 13 a of the hopper 13 with the second annular protrusion 5 c of the hopper lid 5. Then, the cut 5b is widened, the connecting rod 21 is slid along the cut 5b, and the hopper lid 5 is removed from the connecting rod 21. The hopper lid 5 is formed of a rubber material having elasticity so that the cut 5b returns to the original closed state by its own elasticity after the connecting rod 21 is pulled out.

  Below, the effect of the kneader 1 of the Example which has the said structure is described.

  According to the clay kneader 1 described in the embodiment, when the kneading operation is interrupted, the presser plate 20 is inserted into the hopper 13 to shield the opening hole 6 of the casing 8 and the hopper lid 5 is attached to the hopper 13. Thus, the opening of the hopper 13 is sealed, and drying of the clay remaining in the kneading chamber 4 and the hopper 13 can be easily suppressed.

  Further, according to the kneader 1 described in the embodiment, when the hopper lid 5 is attached to and detached from the hopper 13, the notch 5b is widened, and the connecting rod 21 slides along the notch 5b to the through hole 5a. After the insertion or removal from the through-hole 5b and the connecting rod 21 comes out of the notch 5b, the notch 5b is formed of an elastic body so that it returns to its original closed state by its own elasticity. When interrupted, the opening of the hopper 13 is sealed with the hopper lid 5, and drying of the clay remaining in the kneading chamber 4 and the hopper 13 can be easily suppressed.

  Further, according to the kneader 1 described in the embodiment, the hopper lid 5 has a belt-like shape in which the axial thickness of the through-hole 5a increases along the peripheral edge of the through-hole 5a and both edges of the cut 5b. Since the thick portion 5d is provided, the close contact between the connecting rod 21 and the through hole 5a when the connecting rod 21 is inserted into the through hole 5a, and the close contact of the cut portion 5b when the cut 5b is closed. Etc. can be maintained well.

  Further, according to the clay kneader 1 described in the embodiment, when the hopper lid 5 is mounted on the hopper 13, the first annular protrusion 13 a of the hopper 13 is inserted into the hopper lid 5 and the hopper lid 5 Since it is configured to engage with the second annular protrusion 5c, drying of clay remaining in the kneading chamber 4 and the hopper 13 can be reliably suppressed.

  As mentioned above, although one Example of this invention was described, this invention is not limited to the said Example, It can take a various aspect.

It is sectional drawing represented from the front direction of the kneading machine with which this invention was applied. It is a figure showing the external appearance and a partial cross section of the A direction in FIG. It is a figure showing the internal structure of the A direction in FIG. FIG. 2 is a detailed view showing the fitting between the hopper and the hopper lid in FIG. 1. It is the figure showing the structure of the hopper cover in the Example, (a) figure is a top view, (b) figure is an arrow A figure in (a) figure, (c) figure is a cross section in (a) figure It is XX figure.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Kneading machine, 2 ... Drive control apparatus, 3 ... Base, 4 ... Receptacle, 5 ... Hopper lid, 5a ... Insertion hole, 5b ... Notch, 5c ... 2nd annular protrusion, 5d ... Thick part, 5f ... recess, 6 ... opening hole, 7 ... nozzle, 8 ... casing, 9 ... spiral projection, 11a, 11b ... kneading shaft, 12 ... drive motor, 13 ... hopper, 13a ... first annular projection, 14 ... Connecting member, 15 ... press-fitting mechanism, 16 ... power switch, 17 ... spindle, 18 ... operation lever, 18a ... one end, 20 ... presser plate, 21 ... connecting rod, 22 ... cam, 23 ... cam connecting shaft, 24 ... connection Shaft guide member, 24a ... insertion hole, 24b ... storage section, 25 ... limit switch, 25c ... fixture, 26 ... motor gear, 27, 28 ... kneading shaft gear, 29 ... relay gear, 33 ... compression coil spring, 34 ... stopper 38 ... Holder, 39 ... Support plate.

Claims (4)

A casing having a kneading chamber for kneading clay therein, an opening hole through which clay is poured toward the kneading chamber, and a discharge port for discharging clay from the kneading chamber;
A hopper having an opening provided in connection with the opening hole into which the clay is charged;
A pressing plate that is put into and out of the hopper and press-fits the clay in the hopper into the kneading chamber;
A connecting rod that supports the presser plate and is connected to the presser plate and extends to the opposite side of the opening hole through the presser plate;
A hopper lid configured to be detachable from the opening of the hopper, attached to the opening of the hopper, and sealing the opening;
With
The hopper lid is
A recess that fits with the peripheral wall of the opening of the hopper, an insertion hole through which the connecting rod is inserted and elastically contacted, and a cut from the insertion hole to one end of the hopper lid,
When the hopper lid is attached to and detached from the hopper, the notch is widened, the connecting rod slides along the notch and is inserted into or removed from the insertion hole, and the connecting rod is removed from the notch. After exiting, the notch is formed of an elastic body that returns to its original closed state by its own elasticity,
A kneading machine characterized by that. The hopper lid is
Along the peripheral edge of the insertion hole and the both edges of the cut, the axial direction of the insertion hole is provided with a strip-shaped thick portion having a large thickness.
It is characterized by
The clay machine according to claim 1. The hopper includes a first annular protrusion that protrudes outward along the outer peripheral edge of the opening side, and the hopper lid is a second protrusion that protrudes inward along the inner peripheral edge of the opening side of the recess. With an annular projection
When the hopper lid is attached to the hopper,
The first annular protrusion is configured to be inserted into the hopper lid and engage with the second annular protrusion.
The clay kneader according to claim 1 or 2, characterized in that. The presser plate has an outer shape formed along the inner shape of the hopper, and shields the opening hole of the casing when inserted into the hopper.
The clay kneader according to any one of claims 1 to 3, wherein

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